- 9 (5,000 XP)
Creature Sense. The ulitharid is aware of the presence of creatures within 3.25 kilometers of it that have an Intelligence of −4 or higher. It knows the distance and direction to each creature, as well as each creature’s Intelligence, but can’t sense anything else about it. A creature protected by a mind blank spell, a nondetection spell, or similar magic can’t be perceived in this manner.
Magic Resistance. The ulitharid has advantage on saving throws against spells and other magical effects.
Psionic Hub. If an elder brain establishes a psychic link with the ulitharid, the elder brain can form a psychic link with any other creature the ulitharid can detect using its Creature Sense. Any such link ends if the creature falls outside the telepathy ranges of both the ulitharid and the elder brain. The ulitharid can maintain its psychic link with the elder brain regardless of the distance between them, so long as they are both on the same plane of existence. If the ulitharid is more than 8 kilometers away from the elder brain, it can end the psychic link at any time (no action required).
Spellcasting. The ulitharid is a 11th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). It has 17 mana, a mana limit of 3, regains all expended mana when it finishes a long rest and regains half its total mana (rounded up) when it finishes a short rest, and knows the following spells:
1 mana: agonizing rebuke, call to mind, confusion, disable, ego whip, haze senses, meld mindcrystal, mind over body, mind spike, mind trap, psychic fortress, sending, sense minds, telekinesis, thought shield, wandering mind
2 mana: aphasia, clairvoyance, co-opt concentration, eyebite, hold creature, mind blast, mind control, modify memory, personality parasite, psychic crush, psychic reformation, suggestion, synaptic static, telepathic bond
Tentacles. Melee Weapon Attack: +9 to hit, reach 3 m., one creature. Hit: 27 (4d10 + 5) psychic damage. If the target is Large or smaller, it is grappled (escape DC 14) and must succeed on a DC 17 Will saving throw or be stunned until this grapple ends.
Extract Brain. Melee Weapon Attack: +9 to hit, reach 1.5 m., one incapacitated humanoid grappled by the ulitharid. Hit: 55 (10d10) piercing damage. If this damage reduces the target to 0 health, the ulitharid kills the target by extracting and devouring its brain.
Mind Blast (Recharge 5–6). The ulitharid magically emits psychic energy in a 18-meters cone. Each creature in that area must succeed on a DC 17 Will saving throw or take 31 (4d12 + 5) psychic damage and be stunned for 1 minute. A target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.